Horsetail Tree
Casuarina equisetifolia (Wikipedia)
Casuarina equisetifolia, commonly known as coastal she-oak, horsetail she-oak, beach sheoak, beach casuarina or whistling tree is a species of flowering plant in the family Casuarinaceae and is native to Australia, New Guinea, Southeast Asia and India. It is a small to medium-sized, monoecious tree with scaly or furrowed bark on older specimens, drooping branchlets, the leaves reduced to scales in whorls of 7 or 8, the fruit 10–24 mm (0.39–0.94 in) long containing winged seeds (samaras) 6–8 mm (0.24–0.31 in) long.
Casuarina equisetifolia | |
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Subspecies equisetifolia near Darwin | |
Scientific classification ![]() | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Rosids |
Order: | Fagales |
Family: | Casuarinaceae |
Genus: | Casuarina |
Species: | C. equisetifolia
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Binomial name | |
Casuarina equisetifolia | |
Subspecies | |
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Synonyms | |
Casuarina equisetifolia var. typica Domin |

Subspecies incana near Rockhampton